21000492009

素因数分解:

$3^2\times 7^1\times {\mathrm{6151}}^1\times {\mathrm{54193}}^1$

素因数の和:60357

約数の個数: 24

約数和(自身を含む): 34673754752

約数和(自身を除く): 13673262743

約数列:

[1, 3, 7, 9, 21, 63, 6151, 18453, 43057, 54193, 55359, 129171, 162579, 379351, 387513, 487737, 1138053, 3414159, 333341143, 1000023429, 2333388001, 3000070287, 7000164003, 21000492009]

約数ペア:

[(1, 21000492009), (3, 7000164003), (7, 3000070287), (9, 2333388001), (21, 1000023429), (63, 333341143), (6151, 3414159), (18453, 1138053), (43057, 487737), (54193, 387513), (55359, 379351), (129171, 162579)]